To or toward the side:
Alternative spelling of by the by.
As a new but related point; by the way
introducing a different topic; in point of fact
Find another word for by-the-way. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for by-the-way, like: apart-from, aside, by-the-bye, in-passing, incidentally, parenthetically, speaking-of, while on the subject and apropos.